Improvement in car-axle boxes



J'. A. PICARID.

CAR-AXLE BOX.

No.188,071. Patented March 6,1877.

a V mvmom ATTORNEYS.

".PEIERS, PflOTO-UTHWHEB, WASHINGTON, D C) UNITED STATES PATENT QFFICE.

JOSEPH A. PIGARD, OF NORTH PLATTE, NEBRASKA.

IMPROVEMENT IN CAR-AXLE BOXES.

Specification forfiiing part of Letters Patent No. 188.07 I, dated March6, 1877; application filed July 15, 1876.

To all whom it may concern Be it known that I, J osEPH A. PIGARD, ofNorth Platte, in the county of Lincoln and State of Nebraska, haveinvented a new and Improved Journal-Box for Oar-Trucks, of which thefollowing is a specification:

Figure l is a longitudinal section on line 00 w in Fig. 2, and Fig. 2 isa top view, with a portion broken away to show the internalconstruction.

Similar letters of reference indicate corresponding parts.

My invention relates to that class of journal-boxes for car-trucks,known as self-oilers; and it consists in the arrangement, on the upperside of a journal-box, of a reservoir for containing oil, provided withsplit tubes, having screw-caps for controlling the flow of oil, the saidtubes communicating with a series of holes in the back of the brass orhearing surface of the box through grooves out in the brass for thatpurpose. It also consists in backing the said brass by a plate of ironand a heavy sheet of rubber.

Referring to the drawings, A is the casing surrounding the journal B,and provided with a reservoir, (3, on its upper side, near the outer endof the box. Two oil-feeding tubes, a a, are screwed into the bottom ofthe reser voir, so that they project through the casing A, and alsoextend upward in the reservoir 0, and are provided with screw-caps b b.These tubes are split from their upper ends to the bottom of thereservoir. 0 is a hole in the top of the reservoir for introducing oil.The brass D is placed between the journal and the top of the casing A,and is provided with a series of holes, (1, connected by the grooves e.The said grooves are located in the back of the brass, so as to receivethe oil which passes through the tubes a. f is a plate of iron, and g isa sheet of rubber placed be. tween the brass D and the top of the casingA, and provided with holes through which the lower ends of the tubes apass. E is an oil-receiving cup or box, which is pressed against theunder side of the journal B by the spring h, and is of such length as toembrace the enlarged portion of the journal. The end F of the casing Ais removable, and is provided with a recess, 1', in which a check-plate,j, is placed. 70 is a set-screw engaging with a thread in the end F, andbearing against the plate j.

The end G is made in two parts, each of which is removable, beingcapable of sliding out of the groove 1 l. The cover of the reservoir Gis provided with a rubber packing, to prevent the escape of oil.

I have described my improvement as applied to a journal, which isenlarged at the bearing-surface, but it may be applied to ordinaryjournals having an equal diameter throughout.

The operation and advantages of my improvement may be described asfollows: Oil is poured in the reservoir 0, which passes through the slitin the tube a, and into the groove 6, the supply being controlled by thescrew-caps], which cover more or less of the slit through which the oilpasses. The oil passes from the grooves 0 through the holes d tothejournal, which, when in motion, takes a sufficient quantity of oil tokeep it well lubricated. Any surplus of oil is received by the box E,and When it is full the journal dips in the oil.

When the journal does not revolve, no oil passes through the holes d,and consequently at that time there can be no waste of oil. Whenthejournal revolves the surplus of oil is caught and retained by the boxE. The rubber sheet 9 and platefmake a yielding seat for the brass l).The screw it takes up the end motion of the axle.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. The combination of the reservoir 0, split tubes a,cap I), brass I), having the grooves e, and holes (1, the journal B, andcase A, as specified.

2. The combination, with a journal box brass, of a gasket to keep theoil from spreading over its top.

JOSEPH A. PIOARD. Witnesses:

ROBERT DOUGLASS, WM. S. PENISTON.

